diff --git a/uint128_t.cpp b/uint128_t.cpp
index bae8026..5a0b0b1 100644
--- a/uint128_t.cpp
+++ b/uint128_t.cpp
@@ -11,6 +11,10 @@ uint128_t::uint128_t(const char *s) {
     init(s);
 }
 
+uint128_t::uint128_t(const bool & b)
+    : uint128_t((uint8_t) b)
+{}
+
 void uint128_t::init(const char *s) {
     if (s == NULL || s[0] == 0) { uint128_t(); return; }
     if (s[1] == 'x')
@@ -49,6 +53,12 @@ uint8_t uint128_t::HexToInt(const char *s) const {
     return ret;
 }
 
+uint128_t & uint128_t::operator=(const bool & rhs) {
+    UPPER = 0;
+    LOWER = rhs;
+    return *this;
+}
+
 uint128_t::operator bool() const{
     return (bool) (UPPER | LOWER);
 }
diff --git a/uint128_t.include b/uint128_t.include
index b583fe2..21fdaa6 100644
--- a/uint128_t.include
+++ b/uint128_t.include
@@ -69,6 +69,7 @@ class uint128_t{
         uint128_t(uint128_t && rhs) = default;
         uint128_t(std::string & s);
         uint128_t(const char *s);
+        uint128_t(const bool & b);
 
         template <typename T, typename = typename std::enable_if<std::is_integral<T>::value, T>::type >
         uint128_t(const T & rhs)
@@ -116,6 +117,8 @@ class uint128_t{
             return *this;
         }
 
+        uint128_t & operator=(const bool & rhs);
+
         // Typecast Operators
         operator bool() const;
         operator uint8_t() const;
diff --git a/uint256_t.cpp b/uint256_t.cpp
index 9db2194..e4f287d 100644
--- a/uint256_t.cpp
+++ b/uint256_t.cpp
@@ -25,6 +25,10 @@ uint256_t::uint256_t(const char * s, uint8_t base) {
     init_from_base(s, base);
 }
 
+uint256_t::uint256_t(const bool & b)
+    : uint256_t((uint8_t) b)
+{}
+
 void uint256_t::init(const char * s) {
     //create from string
     char buffer[64];
@@ -66,6 +70,12 @@ void uint256_t::init_from_base(const char * s, uint8_t base) {
     }
 }
 
+uint256_t & uint256_t::operator=(const bool & rhs) {
+    UPPER = 0;
+    LOWER = rhs;
+    return *this;
+}
+
 uint256_t::operator bool() const{
     return (bool) (UPPER | LOWER);
 }
diff --git a/uint256_t.include b/uint256_t.include
index d9ec879..3cc2a6f 100644
--- a/uint256_t.include
+++ b/uint256_t.include
@@ -64,6 +64,7 @@ class uint256_t{
         uint256_t(const char *val);
         uint256_t(const std::string & s, uint8_t base);
         uint256_t(const char *val, uint8_t base);
+        uint256_t(const bool & b);
 
         template <typename T, typename = typename std::enable_if<std::is_integral<T>::value, T>::type >
         uint256_t(const T & rhs)
@@ -144,6 +145,8 @@ class uint256_t{
             return *this;
         }
 
+        uint256_t & operator=(const bool & rhs);
+
         // Typecast Operators
         operator bool      () const;
         operator uint8_t   () const;